Never mind the fact that it's named after a song about killing an ex-lover — the Hey Joe Coffee Mug will bring a smile to your face faster than a Hendrix solo. How, you ask? By brewing your coffee in the mug itself, anytime, any place. It's powered by a detachable, USB-rechargeable battery, and instead of heating your coffee to hell and gone then making you wait for it to cool, it heats the water precisely so you can start enjoying it as soon as it's done brewing.